File:ITWAMOL - Fig 121.png

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English: Fig. 121. The structure of the head and sucking beak of the adult cicada

A, the head in side view with the beak (Bk) in natural position B, the head of an immature adult: the mouth (Mth) opened exposing the roof (e) of the sucking pump (see fig. 122), and the tonguelike hypopharynx (Hphy); the parts of the beak separated, showing that it is composed of the labium (Lb), inclosing normally two pairs of long slender bristles (MdB, MxB, one of each pair shown)

a, bridge between base of mandibular plate (Md) and hypopharynx (Hpy); Aclp, anteclypeus; Ant, antenna; Bk, beak; Clp, clypeus; e, roof of mouth cavity, or sucking pump; Ge, gena (cheek plate); Hpy, hypopharynx; Lb, labium; Lm, labrum; Md, base of mandible; MdB, mandibular bristle; Mth, mouth; Mx; maxilla; MxB, maxillary bristle; NMb, neck membrane; O, ocelli
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Source https://en.wikisource.org/wiki/Page:Insects_-_Their_Ways_and_Means_of_Living.djvu/246
Author Robert Evans Snodgrass

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This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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